阅读说明：本技术 一种1,1,2-三氯乙烷反应器及其方法 (A kind of 1,1,2- trichloroethanes reactor and its method ) 是由 陈俊杰 何坚华 吴志刚 余云飞 姜雨水 陈欣 陈林 付建林 王国栋 胡进连 于 2019-08-09 设计创作，主要内容包括：本发明公开了一种1,1,2-三氯乙烷反应器,包括垂直安装的筒体,筒体由自下而上依次连接的下封头、第一节筒体、第二节筒体、第三节筒体、第四节筒体和上封头组成,下封头底部设置有循环液进口,第一节筒体内设置有氯乙烯分布器,第一节筒体上设置有氯乙烯进口,氯乙烯进口与氯乙烯分布器相连,第二节筒体内设置有氯气分布器,第二节筒体上设置有氯气进口,氯气进口与氯气分布器相连,第三节筒体上设置有下部测温口和中部测温口,第三节筒体与第四节筒体之间设置有格栅板,第四节筒体上设置有循环液出口、溢流口和上部测温口,上封头顶部设置有排气口。本发明还公开了使用该反应器生产1,1,2-三氯乙烷的方法。本发明具有结构简单,操作弹性大,气液传质效果好、反应过程安全可控的优点。(The invention discloses one kind 1, 1, 2- trichloroethanes reactor, including vertically arranged cylinder, cylinder is by sequentially connected lower head from bottom to top, first segment cylinder, second section cylinder, third section cylinder, section four, cylinder and upper cover composition, lower head bottom is provided with circulation fluid import, vinyl chloride distributor is provided in first segment cylinder, vinyl chloride import is provided on first segment cylinder, vinyl chloride import is connected with vinyl chloride distributor, chlorine gas distributor is provided in second section cylinder, chlorine inlet is provided on second section cylinder, chlorine inlet is connected with chlorine gas distributor, lower part temperature-measuring port and middle part temperature-measuring port are provided on third section cylinder, flase floor is provided between third section cylinder and Section of four cylinder, section four, circulation fluid outlet is provided on cylinder, overflow port and top temperature-measuring port, exhaust is provided at the top of upper cover Mouthful.The invention also discloses the methods for using reactor production 1,1,2- trichloroethanes.The present invention has structure simple, and operating flexibility is big, the advantage that gas-liquid mass transfer effect is good, reaction process is safely controllable.)

1. one kind 1,1,2- trichloroethanes reactor, including vertically arranged cylinder, which is characterized in that the cylinder by from lower and Upper sequentially connected lower head, first segment cylinder, the second section cylinder, third section cylinder, Section of four cylinder and upper cover composition, institute It states lower head bottom and is provided with circulation fluid import, vinyl chloride distributor, the first segment cylinder are provided in the first segment cylinder Vinyl chloride import is provided on body, the vinyl chloride import is connected with the vinyl chloride distributor, sets in the second section cylinder It is equipped with chlorine gas distributor, chlorine inlet, the chlorine inlet and the chlorine gas distributor phase are provided on the second section cylinder Even, be provided with lower part temperature-measuring port and middle part temperature-measuring port on the third section cylinder, the third section cylinder and Section of four cylinder it Between be provided with flase floor, circulation fluid outlet, overflow port and top temperature-measuring port, the upper cover are provided on Section of four cylinder Top is provided with exhaust outlet.

2. as described in claim 11,1,2- trichloroethanes reactor, which is characterized in that Section of four cylinder includes main cylinder Body and taper connection cylinder, the second hand hole is provided on the taper connection cylinder, and the flase floor is arranged in the third section Between cylinder and the taper connection cylinder, the circulation fluid outlet, overflow port and top temperature-measuring port are arranged on main cylinder.

3. as described in claim 11,1,2- trichloroethanes reactor, which is characterized in that also set up on the third section cylinder There are the first hand hole and 3~6 the first trunnions.

4. as described in claim 11,1,2- trichloroethanes reactor, which is characterized in that the first segment cylinder, the second section Cylinder and third section cylinder internal diameter are 600~1200mm.

5. as described in claim 11,1,2- trichloroethanes reactor, which is characterized in that the vinyl chloride distributor and described The exhaust hole number of chlorine gas distributor is 360~600, and the diameter of the gas vent is 3~5mm.

6. as described in claim 11,1,2- trichloroethanes reactor, which is characterized in that the chlorine inlet and vinyl chloride into Mouth is distributed in the two sides of the cylinder, and the vertical drop of the chlorine inlet and vinyl chloride import is 500~800mm.

7. as claimed in claim 21,1,2- trichloroethanes reactor, which is characterized in that also set up someone on the main cylinder Hole and 3~6 the second trunnions.

8. as claimed in claim 21,1,2- trichloroethanes reactor, which is characterized in that the main cylinder internal diameter be 1500~ 2500mm。

9. the method for producing 1,1,2- trichloroethanes using reactor described in claim 1, which is characterized in that by gas phase chloroethene Alkene is passed through 1,1,2- trichloroethanes reactor by vinyl chloride import, while chlorine is passed through 1,1,2- trichlorine by chlorine inlet Ethane reactor carries out addition reaction, passes through top temperature-measuring port, middle part temperature-measuring port and lower part temperature-measuring port control respectively in reaction process Reactor upper section reaction temperature processed is 44-52 DEG C, and middle section reaction temperature is 42-50 DEG C, and lower section reaction temperature is 40-48 DEG C, raw At reaction solution a part of the trichloroethanes containing 1.1.2- produced as product by overflow port continuous overflow, a part is by following The outlet of ring liquid carries out after forced circulation through circulation fluid import Returning reactor, and the molar ratio of the vinyl chloride and chlorine is 1: 1.02-1.05, vinyl chloride flow are 600-1200m³/h。

10. the method for 1,1,2- trichloroethanes of production according to claim 9, which is characterized in that described to carry out forcing to follow The flow of the reaction solution of ring is the 30~40% of vinyl chloride flow.

Technical field

The present invention relates to chloralkanes, and in particular to one kind 1,1,2- trichloroethanes reactor and its method.

Background technique

1,1,2- trichloroethanes is the colorless and transparent volatile liquid for having special sweet taste, nonflammable, not soluble in water, can be with Alcohol, ether, ester, ketone are miscible.1,1,2- trichloroethanes is a kind of important organic intermediate, can be used as producing vinylidene chloride (VDC) raw material；1,1,2- trichloroethanes is also a kind of good organic solvent, can be used as grease, wax, rubber, acetate fiber Deng solvent, dyestuff, extractant of fragrance etc..

Preparation of industrialization 1,1, the method for 2- trichloroethanes mainly have vinyl chloride (VCM) chloridising and dichloroethanes (EDC) Chloridising.VCM chloridising mild condition, technics comparing is mature, has stronger competitiveness.This method is with vinyl chloride and chlorine It is reacted, through alkali cleaning, separation, obtains finished product, vinyl chloride raw material need to become gaseous state from liquid before entering reactor.Vinyl chloride chlorine Change the tower bubbling reactor that reactor is generally liner enamel.Since the thermal discharge of vinyl chloride chlorination reaction is very big, and temperature It is affected to the selectivity of the chlorination reaction, temperature is higher, and side reaction is more, so as to cause product purity reduction, reaction Selection rate and yield decline.And tower bubbling reactor gas-liquid mass transfer heat-transfer effect is poor, and chlorine, vinyl chloride is easily caused to match Amount, temperature distribution is non-uniform, and by-product polychloride production quantity increases, and declines reaction selectivity and yield.It uses and wards off simultaneously 1,1,2- trichloroethanes of porcelain reactor production, product purity is not high, second-rate, and low output, generally in 8kt/a or less.

As China Patent Publication No. CN109651067A discloses a kind of preparation process of 1,1,2- trichloroethanes, the preparation Technique includes the following steps: that vinyl chloride is sent into chlorination reactor, the 1 of generation, 1,2- trichloroethanes a part warp with chlorine by (1) The overflow port overflow of superchlorination reactor top is to chlorated liquid storage tank；(2) chlorated liquid in chlorated liquid storage tank is squeezed into alkali cleaning kettle Alkali cleaning is carried out, is then allowed to stand layering, lower layer's colourless transparent liquid places 1,1,2- trichloroethanes crude product slot, among trichloroethanes Pump squeezes into 1,1,2- trichloroethanes crude product large trough for trichloroethanes rectifying；(3) 1,1,2- trichloroethanes crude product is passed through into low boiling Tower, overhead liquid enter trichloroethanes low-boiling-point substance collecting tank, and materials at bottom of tower is pumped into high boiling tower by high boiling tower feed pump and carries out essence System；(4) into the material of high boiling tower through high boiling tower rectifying again, liquid enters molecular sieve tank and enters 1,1,2- tri- using liquid level difference Chloroethanes finished product large trough.Shortcoming is energy consumption height, and product by-product is more, and product selectivity is poor, need to configure huge post-processing System can just obtain the product of higher degree, and equipment investment is big.

As China Patent Publication No. CN109651066A discloses a kind of production system of 1,1,2- trichloroethanes, the production System includes chloro addition system and alkali cleaning hierarchical system, and chloro addition system includes vinyl chloride gasification system, chlorine gasification system System and chlorination system, alkali cleaning hierarchical system include alkali preparing tank, alkali cleaning kettle A, alkali cleaning kettle B, alkali cleaning kettle C, alkali cleaning kettle D, alkali cleaning kettle E, alkali cleaning kettle F, alkali cleaning trichloroethanes medial launder, alkali measuring tank A, alkali measuring tank B, lye vacuum kettle A, lye vacuum kettle B and true Empty air accumulator.Shortcoming is energy consumption height, and product by-product is more, and product selectivity is poor, need to configure huge caustic washing system.

As China Patent Publication No. CN1793093A discloses a kind of method for preparing 1,1,2- trichloroethanes.Including as follows Step: with 1,1,2- trichloroethanes for circulatory mediator, it is sent into the first mixed injection device, vinyl chloride is filled by the first mixing jetting The vinyl chloride entrance for setting 1 is pumped into the mixed zone of the first mixed injection device, is then dissolved in the chlorine of 1,1,2- trichloroethanes Ethylene is sent into the second mixed injection device, and chlorine is pumped into the second mixing by the chlorine inlet of the second mixed injection device 2 The mixed zone of injection apparatus, in the mixed zone of the second mixed injection device, vinyl chloride and chlorine mixing pre-reaction, subsequently into dress Having the main pipeline reactor of static mixing element, the reaction was continued, generates 1,1,2- trichloroethanes, and the product after reaction passes through gas-liquid Separator separation, into subsequent workshop section.Shortcoming is needed in chlorination reaction process using mixed injection device and equipped with quiet The main pipeline reactor of state hybrid component, these apparatus structures are relative complex, and occupied space is big, and product purity is low, by-product is more, Product selectivity is poor, high production cost.

As China Patent Publication No. CN1440959A provides the 1,1,2- trichlorine continuously prepared with high productive capacity, in high yield The preparation method and device of ethane.In reaction tower, in the presence of a catalyst to vinyl chloride addition chlorine, it is anti-that it is removed with cooler Heat is answered, is recycled in reaction tower, the preparation method for 1,1, the 2-- trichloroethanes that extraction a part is separated and recovered.With And by have circulation fluid supply mouth and outlet mouth, vinyl chloride supply unit, chlorine supply unit reaction tower, cooler, circulation Device, the preparation facilities for 1,1, the 2- trichloroethanes that extraction unit is constituted.Shortcoming is the preparation facilities gas-liquid mass transfer heat-transfer effect It is poor, easily cause chlorine, vinyl chloride proportion out of control, temperature distribution is non-uniform, and by-product polychloride production quantity increases, and makes to react Selectivity and yield decline.

If Chinese patent notification number CN203507980U discloses a kind of trichloro ethylene production chlorination tower, including tower body, Tower body is divided into the first tower section, the second tower section, third tower section and the 4th tower section from bottom to top；First tower section be equipped with acetylene gas entrance and Chlorine inlet, acetylene entrance is interior inserted with acetylene distributor pipe, and chlorine inlet is interior inserted with chlorine distributor pipe；Acetylene distributor pipe and chlorine The bottom of gas distributor pipe is respectively equipped with venthole；First tower section is set there are two first circulation mouth, more domestic currently used enamel The tetrachloroethanes quality of chlorination tower production is high, and ceramic packing is loaded in tower, keeps two kinds of gases of chlorine and acetylene equal in chlorination tower Even distribution avoids local detonation, can quickly be carried out continuously charging production, and specific yield energy consumption is low, and utilization rate of equipment and installations is high.Deficiency Place is the control and product extraction that each tower section is unfavorable for reaction heat in the chlorination tower, and reaction selectivity is poor, and recovery rate is lower.

Summary of the invention

The problem to be solved in the present invention is against the above deficiency, to provide that a kind of structure is simple, and operating flexibility is big, gas-liquid mass transfer Effect is good, easily controlled 1,1,2- trichloroethanes reactor of reaction heat and its method.

In order to solve the above problem, the technical solution adopted by the present invention are as follows: one kind 1,1,2- trichloroethanes reactor, including hang down The cylinder directly installed, the cylinder is by sequentially connected lower head from bottom to top, first segment cylinder, the second section cylinder, third section Cylinder, Section of four cylinder and upper cover composition, the lower head bottom is provided with circulation fluid import, sets in the first segment cylinder It is equipped with vinyl chloride distributor, vinyl chloride import, the vinyl chloride import and the vinyl chloride are provided on the first segment cylinder Distributor is connected, and chlorine gas distributor is provided in the second section cylinder, is provided with chlorine inlet on the second section cylinder, institute It states chlorine inlet to be connected with the chlorine gas distributor, is provided with lower part temperature-measuring port and middle part temperature-measuring port on the third section cylinder, Flase floor is provided between the third section cylinder and Section of four cylinder, be provided on Section of four cylinder circulation fluid outlet, Overflow port and top temperature-measuring port, the upper cover top are provided with exhaust outlet.

As the preferred embodiment of the present invention, Section of four cylinder includes main cylinder and taper connection cylinder, described The second hand hole is provided on taper connection cylinder, the flase floor is arranged in the third section cylinder and the taper connection cylinder Between, the circulation fluid outlet, overflow port and top temperature-measuring port are arranged on main cylinder.

As the preferred embodiment of the present invention, the first hand hole and 3~6 first are additionally provided on the third section cylinder Trunnion.

As the preferred embodiment of the present invention, the first segment cylinder, the second section cylinder and third section cylinder internal diameter are equal For 600~1200mm.

As the preferred embodiment of the present invention, the exhaust hole number of the vinyl chloride distributor and the chlorine gas distributor It is 360~600, the diameter of the gas vent is 3~5mm.

As the preferred embodiment of the present invention, the chlorine inlet and vinyl chloride import are distributed in the two of the cylinder The vertical drop of side, the chlorine inlet and vinyl chloride import is 500~800mm.

As the preferred embodiment of the present invention, manhole is additionally provided on the main cylinder.

As the preferred embodiment of the present invention, 3~6 the second trunnions are additionally provided on the main cylinder.

As the preferred embodiment of the present invention, the main cylinder internal diameter is 1500~2500mm.

The present invention also provides the methods for using the reactor to produce 1,1,2- trichloroethanes, and gas phase vinyl chloride is passed through chloroethene Alkene import is passed through 1,1,2- trichloroethanes reactor, while chlorine is passed through 1,1,2- trichloroethanes reactor by chlorine inlet Addition reaction is carried out, is controlled on reactor by top temperature-measuring port, middle part temperature-measuring port and lower part temperature-measuring port respectively in reaction process Section reaction temperature is 44-52 DEG C, and middle section reaction temperature is 42-50 DEG C, and lower section reaction temperature is 40-48 DEG C, and generation contains 1.1.2- reaction solution a part of trichloroethanes is produced as product by overflow port continuous overflow, and a part is gone out by circulation fluid It mouthful carries out after forced circulation through circulation fluid import Returning reactor, the molar ratio of the vinyl chloride and chlorine is 1:1.02- 1.05, vinyl chloride flow is 600-1200m³/h。

As the preferred embodiment of the present invention, the flow of the reaction solution for carrying out forced circulation is vinyl chloride flow 30~40%.

1,1, the 2- trichloroethanes product purity that the present invention obtains, can without being equipped with after-treatment system 98.2% or more To be obtained after can also further being refined according to actual needs higher as product sale or as the raw material of lower step process The product of purity；Separate unit chlorination reactor annual capacity is ten thousand tons of 3.3-6.7.

Since the thermal discharge of vinyl chloride chlorination reaction is very big, and temperature is affected to the selectivity of the chlorination reaction, temperature Degree is higher, and side reaction is more, so as to cause product purity reduction, selecting response rate and yield decline；Temperature is lower, then addition Reaction (main reaction) is dominant.The top cylinder of 1,1,2- trichloroethanes reactor of the invention is greater than lower cylinder (head big foot It is small), 1,1, the 2- trichloroethanes that cylinder lower part can be made to generate is climbed to top, takes away reaction heat, and third section cylinder is set It is equipped with lower part temperature-measuring port, middle part temperature-measuring port, Section of four cylinder is provided with top temperature-measuring port, for monitoring each section of reaction of reactor Reaction temperature can be effectively controlled in temperature, to efficiently reduce the generation of side reaction.Therefore, the temperature of reactor upper, middle and lower section Difference fluctuation is small, and reacting balance control ability significantly increases, and reaction process is more complete, and conversion ratio, product purity significantly improve. According to needs of production, of the invention 1,1,2- trichloroethanes reactor can also mating SIS system, once temperature be more than warning Value then cuts off unstripped gas material inlet valve in time, further increases production efficiency and safety.

Of the invention 1 is provided with vinyl chloride distributor, the second section cylinder in the first segment cylinder of 1,2- trichloroethanes reactor It is provided with chlorine gas distributor in vivo.The density ratio chlorine of vinyl chloride is small, in the reactor, the flow velocity of the velocity ratio chlorine of vinyl chloride Fastly, therefore in the present invention, vinyl chloride distributor is arranged under chlorine gas distributor, chlorine inlet and vinyl chloride import it is vertical Difference in height is 500~800mm, vinyl chloride and chlorine gas can be made uniformly to be sprayed in reactor with regime flow, in reactor It is inside uniformly distributed, chlorine, vinyl chloride proportion are stablized, and reacting balance carries out, and improves reacting balance control ability, conversion ratio, production Product purity significantly improves.In the present invention, chlorine inlet and vinyl chloride import are distributed in the two sides of the cylinder, it is convenient in the future more It changes.

Of the invention 1 is provided with flase floor in Section of four cylinder of 1,2- trichloroethanes reactor, convenient on flase floor Filler is loaded, vinyl chloride and chlorine is uniformly distributed in reactor, further improves reacting balance control ability, is converted Rate, product purity significantly improve.

Of the invention 1, the first segment cylinder of 1,2- trichloroethanes reactor are provided with circulation fluid import, and Section of four cylinder is set Being equipped with circulation fluid outlet makes reaction solution convenient for adding forced circulation pump outside 1,1,2- trichloroethanes reactor in production Circulation forced circulation is become from temperature difference promotion, internal circulating load increases exponentially, significantly enhance mass-and heat-transfer effect, on reactor, In, lower section uniformity of temperature profile, reacting balance is controllable, further reduces the generation of side reaction, improve selecting response rate and Yield.

Vinyl chloride raw material need to become gaseous state from liquid before entering reactor, which generally uses hot water as heating agent.This Section four, it is provided with circulation fluid outlet on cylinder of 1,1,2- trichloroethanes reactor of invention, reaction solution all the way can be drawn and be used for The gasification of vinyl chloride raw material has not only achieved the purpose that reduce reacting liquid temperature, but also has taken full advantage of heat of reaction, energy saving, water-saving Effect is obvious.

Flanged joint can be used in of the invention 1, the first segment cylinder of 1,2- trichloroethanes reactor and the second section cylinder, just It is replaced in vinyl chloride distributor in the future and chlorine gas distributor.

Section four, cylinder of of the invention 1,1,2- trichloroethanes reactor is additionally provided with the second hand hole, convenient for grid in the future Position is adjusted when plate is replaced.

Section of four cylinder top of of the invention 1,1,2- trichloroethanes reactor is equipped with exhaust outlet, further improves anti- Tail gas recycling and reusing after the stability and reaction that should manipulate in the process.

Compared with prior art, the present invention having the advantage that

1, structure is simple, and operating flexibility is big, and of the invention 1,1,2- trichloroethanes reactor shell diameter can be according to production capacity It is adjusted, reasonable barrel diameter size and caliber can be designed by calculating in actual production, reach optimal reaction effect Fruit；Each section cylinder, which can separate, uses flanged joint, convenient for overhauling in the future；Section four, cylinder is additionally provided with the second hand hole, is convenient for day Position is adjusted when flase floor is replaced afterwards.

2, gas-liquid mass transfer heat-transfer effect is good, and the lower head of of the invention 1,1,2- trichloroethanes reactor is provided with circulation fluid Import, Section of four cylinder be provided with circulation fluid outlet, it is easy to produce in add pressure outside 1,1,2- trichloroethanes reactor Circulating pump makes the circulation of reaction solution become forced circulation from temperature difference promotion, and internal circulating load increases exponentially, and significantly enhances mass-and heat-transfer Effect, reactor upper, middle and lower section uniformity of temperature profile, reacting balance is controllable, further reduces the generation of side reaction, improves Reaction selectivity and yield, product selectivity are greater than 99.5%, and product purity is greater than 98.2%.

3, reaction process is safely controllable, and the top cylinder of of the invention 1,1,2- trichloroethanes reactor is greater than lower cylinder (head big foot is small), 1,1, the 2- trichloroethanes that cylinder lower part can be made to generate are climbed to top, take away reaction heat, and third section Cylinder is provided with lower part temperature-measuring port, middle part temperature-measuring port, and Section of four cylinder is provided with top temperature-measuring port, for monitoring each of reactor Section reaction temperature, can be effectively controlled reaction temperature, so that the generation of side reaction is efficiently reduced, each section of reactor upper, middle and lower temperature Difference fluctuates small, uniformity of temperature profile, and within ± 3 DEG C, reacting balance control ability significantly increases each section of temperature difference undulated control.

4, good product quality is provided with vinyl chloride point in the first segment cylinder of of the invention 1,1,2- trichloroethanes reactor Cloth device is provided with chlorine gas distributor in the second section cylinder, vinyl chloride and chlorine gas is made uniformly to be sprayed to reaction with regime flow In device, stablize chlorine, vinyl chloride proportion, reacting balance carries out；Section four, it is provided with flase floor in cylinder, convenient in flase floor Upper filling filler, is uniformly distributed vinyl chloride and chlorine in reactor, further improves reacting balance control ability, product Selectivity, product purity significantly improve.

5, energy conservation and environmental protection is provided with circulation fluid on Section of four cylinder of of the invention 1,1,2- trichloroethanes reactor and goes out Mouthful, the gasification that reaction solution all the way is used for vinyl chloride raw material can be drawn, has not only achieved the purpose that reduce reacting liquid temperature, but also sufficiently benefit With heat of reaction；Section four, it is equipped with exhaust outlet at the top of cylinder, further improves the stability manipulated in reaction process and anti- Tail gas recycling and reusing, energy saving, water-saving effect are obvious after answering.

Detailed description of the invention

Attached drawing 1 is the structural schematic diagram of 1,1,2- trichloroethanes reactor of the invention.

In figure: 1 is circulation fluid import, and 2 be first segment cylinder, and 3 be the second section cylinder, and 4 be chlorine inlet, and 5 survey for lower part Warm mouth, 6 be third section cylinder, and 7 be middle part temperature-measuring port, and 8 be the second hand hole, and 9 be manhole, and 10 be Section of four cylinder, and 11 be exhaust Mouthful, 12 be overflow port, and 13 be top temperature-measuring port, and 14 export for circulation fluid, and 15 be the first hand hole, and 16 be vinyl chloride import, and 17 are Flase floor, 18 be the first trunnion, and 19 be the second trunnion, and 20 be chlorine gas distributor, and 21 be vinyl chloride distributor, and 22 be upper cover, 23 be lower head.

Specific embodiment

As shown, of the invention 1,1,2- trichloroethanes reactor, including vertically arranged cylinder, cylinder by from lower and Upper sequentially connected lower head 23, first segment cylinder 2, the second section cylinder 3, third section cylinder 6, the 4th sections of cylinders 10 and upper covers 22 compositions, 23 bottom of lower head is provided with circulation fluid import 1, vinyl chloride distributor 21, first segment is provided in first segment cylinder 2 Vinyl chloride import 16 is provided on cylinder 2, vinyl chloride import 16 is connected with vinyl chloride distributor 21, setting in the second section cylinder 3 There is chlorine gas distributor 20, chlorine inlet 4 is provided on the second section cylinder 3, chlorine inlet 4 is connected with chlorine gas distributor 20, third It is provided with lower part temperature-measuring port 5 and middle part temperature-measuring port 7 on section cylinder 6, is provided with lattice between third section cylinder 6 and Section of four cylinder 10 Screen 17 is provided with circulation fluid outlet 14, overflow port 12 and top temperature-measuring port 13 on Section of four cylinder 10, sets at the top of upper cover 22 It is equipped with exhaust outlet 11.

The process flow of 1,1,2- trichloroethanes is prepared using the reactor are as follows:

A certain amount of 1,1,2- trichloroethanes is added before reaction into 1,1,2- trichloroethanes reactor as mother liquor, and 25 iron hoop filler of ￠ is loaded on flase floor 17, on the one hand filler provides phase interface, another aspect chlorine for gas-liquid two-phase contact mass transfer Gas reacts the catalyst that the ferric trichloride generated is chlorine Yu chloroethene alkene reaction with 25 iron hoop filler of ￠.Liquid phase vinyl chloride is through VCM Delivery pump continuously send to vinyl chloride evaporator and is vaporized, and obtains gas phase vinyl chloride, and gas phase vinyl chloride is passed through vinyl chloride import 16 are continuously passed through 1,1,2- trichloroethanes reactor and are uniformly sprayed in reactor through vinyl chloride distributor 21, while by chlorine Continuously 1,1,2- trichloroethanes reactor is passed through by chlorine inlet 4 and is uniformly sprayed in reactor through chlorine gas distributor 20, Addition reaction is carried out, passes through top temperature-measuring port 13, middle part temperature-measuring port 7, lower part temperature-measuring port 5 in reaction process and monitors reactor respectively The temperature of upper, middle and lower section, can be effectively controlled reaction temperature, to reduce the generation of side reaction；The temperature difference fluctuation that each section of reactor Small, uniformity of temperature profile, reacting balance control ability significantly increases, reaction solution a part of the trichloroethanes containing 1.1.2- of generation It is sold by 12 continuous overflow of 1,1,2- trichloroethanes reactor top overflow port to chlorated liquid storage tank as product or as under Walk the raw material of process；A part sequentially enters the chlorination added outside 1,1,2- trichloroethanes reactor by circulation fluid outlet 14 Circulating pump, chlorination plate heat exchanger, vinyl chloride evaporator carry out forced circulation finally by 1 Returning reactor of circulation fluid import, A part of reaction heat is taken away by the recirculated water for flowing through chlorination plate heat exchanger, and a part of reaction heat is by liquid vinyl chloride material gasification When take away, make the circulation of reaction solution from the temperature difference promotion become forced circulation, internal circulating load increases exponentially, and significantly enhances mass-and heat-transfer Effect；Part reaction solution is used for the gasification of vinyl chloride raw material simultaneously, has not only achieved the purpose that reduce reacting liquid temperature, but also sufficiently benefit With heat of reaction, energy-saving effect is obvious.The tail gas generated in reaction process passes through chlorinated exhaust surge tank gas through exhaust outlet 11 After liquid separation, liquid phase removes chlorated liquid storage tank, and gas phase is by venturi, and into secondary chlorination reactor, the reaction was continued.

The present invention will be described in further detail by the following examples, but the present invention is not limited in the implementation Example.